Oldsmobile 1999 Intrigue - Manual (Page 134)

yellow blue
3-8
Rear Window Defogger
The rear window defogger
uses a warming grid to
remove fog from the rear
window. Press the button to
turn the defogger on. It will
turn itself off after about
10 minutes.
If you turn it on again, the defogger will only run for
about five minutes before turning off. You can also turn
it off by turning off the ignition or pressing the
button again.
Do not attach anything like a temporary vehicle license
or decal across the defogger grid.
NOTICE:
Don’t use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn’t be covered by your warranty.
Ventilation System
Adjust the direction of airflow by moving the louvered
vents. To completely shut off airflow to the outlet move
the thumbwheel down. To open the outlet for airflow
move the thumbwheel up.